Macrocyclic lactone antibacterial antibiotic compounds

ABSTRACT

Novel macrocyclic lactone antibacterials isolated from a culture containing the microorganism S. aerocolongenes sub sp. antibiotica SCC 1886, ATTC 55003 and their use for treating and/or preventing antibacterial infections, especially Chlamydia infections are disclosed.

This is a division of application Ser. No. 08/123,656 filed Sep. 20,1993 now U.S. Pat. No. 5,342,852.

BACKGROUND OF THE INVENTION

This invention relates to a culture that is the microorganismSaccharothrix aerocolongenes subsp. antibiotica SCC 1886, ATCC 55003which produces six novel macrocyclic lactone antibacterial antibiotics.This invention also relates to a method of treating and/or preventingbacterial infections especially Chlamydia--caused infections by use ofthe macrocyclic lactone antibacterial antibiotic(s) or pharmaceuticalcompositions containing such macrocyclic lactone antibacterialantibiotics.

Macrocyclic lactone antibiotics are a class of antibacterials including,for example, kijanimicin which is disclosed in U.S. Pat. No. 4,375,542;tetrocarcins which are disclosed, for example, by N. Hirayama et al. inTetrahedron Letters; Vol. 21, (1980) 2259 and Tamaoki et al. in J.Antibiotics Vol. 33, (1980) 946; and Antlermycins which are disclosed byK. Kobinata et al. in J. Antibiotics (1980) Vol. 33, 244 and 772. Noprior art reference of which we are aware discloses the macrocycliclactone antibacterial antibiotics of this invention.

SUMMARY OF THE INVENTION

The present invention provides a compound represented by formula I##STR1##

The present invention also provides a method of treating and/orpreventing bacterial infections in a mammal which comprisesadministering an antibacterial effective amount of compound representedby formula I: ##STR2## or mixtures of compounds of formula I orpharmaceutical compositions thereof.

The present invention further provides a pharmaceutical composition fortreating and/or preventing a bacterial infection in mammals whichcomprises an antibacterial effective amount of a compound of formula 1or mixtures thereof and a pharmaceutically acceptable carrier therefor.

Finally the present invention provides a biologically pure culture ofthe microorganism Saccharothrix aerocolongenis subsp antibiotica, SCCC1886, ATCC 55003, said culture being capable of producing the compoundsof formula I in recoverable quantity upon fermentation in an aqueousnutrient medium containing assimilable sources of carbon, nitrogen andinorganic substances.

The Microorganism

Saccharothrix aerocolonigenes subsp. antibiotica SCC 1886 was isolatedfrom a soil sample found in Ohio. A viable culture of this microorganismSCC 1886 was deposited on Jan. 4, 1990 in the collection of the AmericanType Culture Collection (ATCC) in Rockville, Md., where it has beenassigned accession number ATCC 55003. Should the deposited culturebecome lost, destroyed or non-viable during the longer of the thirty(30) year period from the date the culture was deposited or the five (5)year period after the last request for the deposited culture or theeffective life of the patent which issues from this application, theculture will be replaced upon notice by applicants or assignee(s) ofthis application. Subcultures of Saccharothrix aerocolonigenes subsp.antibiotica SCC 1886, ATCC 55003 are available during the pendency ofthis application to one determined by the Commissioner of Patents andTrademarks to be entitled thereto under 37 CFR 1.14 and 35 USC 122 andwill be available to the public without restriction once a patent basedon this application is granted. Use of the microorganism is dependent onthe US Patent Laws.

Taxonomic Description of the Producing Strain Saccharothrixaerocolonigenes subsp. antibiotica SCC 1886, ATCC 55003 StrainMaintenance

Source materials used for the following taxonomic studies were frozen(-80° C.) preparations of pure cultures of the strain SCC 1886. Inoculumfor the biochemical and physiological tests was prepared by adding 1.0ml of thawed culture suspension to 10 ml of the broth in a test tubewhich was placed on a rotary shaker (250-300 RPM, 28°-30° C.) for 3 to 5days. The culture was harvested by centrifugation and, whereappropriate, washed three times with distilled water by centrifugation.The final cell pellet so-obtained was resuspended in distilled water toapproximately 4 times the packed cell volume. Approximately 0.1 ml ofthe cell suspension so-formed was used to inoculate all biochemicaltests except the lysozyme studies, where the inoculum was a drop of avery dilute cell suspension. Readings of the results were made at weeklyintervals over a 2 to 6 week period.

Morphological observations of the culture were made on plates of wateragar, inorganic salts-starch agar (ISP 4) and Czapek sucrose agar.Plates were incubated at 28°-30° C. for 2 to 4 weeks.

Morphology

Strain SCC 1886 is a gram positive, filamentous organism that forms awell-developed moderately branching substitute mycelium with hyphaeapproximately 0.4 to 0.8 μm in diameter. The substrate mycelium has atendency to fragment into coccobacillary elements as the culture ages.

Strain SCC 1886 usually produces little visible aerial mycelium. Suchaerial mycelium, when present, is usually in the form of scattered whitepatches. Under 400× magnification, sparse, scattered patches of aerialmycelia are frequently observed. Much of this mycelia is sterile but, anoccasional hyphae that has completely fragmented into spores will beobserved. Such spore chains are straight to flexuous and vary in lengthfrom less than ten spores to frequently more than 50 spores per chain.Such spores are cylindrical and somewhat irregular in size(approximately 0.6-0.8 μm wide×0.8-4.3 μm long). When aerial myceliabecome sufficiently dense on inorganic salts-starch agar, characteristicclumps of interwoven aerial hyphae or "aerial colonies" are sometimesobserved. No motile elements were observed in either the substrate oraerial mycelia.

Chemotaxonomy

Purified cell wall preparations of the producing strain SCC 1886 containmeso-diaminopimelic acid, glutamic acid, alanine, galactosamine,glucosamine, muramic acid, galactose, ribose and rhamnose (Cell wallType III). Whole-cell hydrolysates contain galactose, glucose, mannose,ribose and rhamnose. Phospholipids present were phosphatidylinositolmannosides, phosphatidytinnositol, diphosphatidylglycerol andphosphatidylethanolamine acylated with hydroxy fatty acids and normalfatty acids (Type PII). No mycolates are present.

Physiological and Biochemical Characteristics

The physiological and biochemical characteristics of the strain SCC 1886are presented in Table 1. Acid production from carbohydrates andcarbohydrate utilization of the Strain SCC 1886 are shown in Table 2.

Macroscopic Description

The growth characteristic of the strain SCC 1886 on various media arepresented in Table 3. All plates were incubated at 28° C. and observedat intervals of up to 4 weeks. The common names for the colors werechosen after comparison with color chips from the Methuen Handbook ofColour (Third Edition, Eyre Methuen Ltd., London). The substratemycelium of strain SCC 1886 varies from pale yellow to brownish orangeto light brown. Strain SCC 1886 tends to produce little, if any, visibleaerial mycelium. If present, it is as scattered white patches. Under400× magnification scattered patches of aerial mycelium are sometimesobserved on inorganic salts-starch agar, Czapek sucrose agar orglycerol-asparagine agar. The soluble pigments produced by strain SCC1886 vary from pale yellow to pinkish white to brownish orange.

Conclusion

On the basis of the following characteristics of strain SCC 1886described above: (1) chemotaxonomic, i.e., that the cell wall containsmeso-diaminopimelic acid but no glycine; whole-cell hydrolysates containgalactose and rhamnose; phosphatidylethanolamine is present; and, thatmycolic acids are absent, (2) physiological, i.e., that the strains SCC1880 is aerobic, catalase positive and lysozyme resistant, and (3)morphological, i.e., both aerial and vegative hyphae fragment into ovoidto bacillary nonmotile elements, strain SCC 1886 was placed in the genusSaccharothrix.

The description of strain SCC 1886 was compared with the descriptions ofthose Saccharothrix species listed on the Approved Lists of BacterialNames or found in the patent literature: Saccharothrix australiensis, S.aerocolonigenes, S. cryophilus, S. espanaensis, S. mutabilis, S.texasensis and S. waywayandensis. On the basis of physiologicalcharacteristics, strain SCC 1886 was easily differentiated from all thedescribed species except S. waywandensis and S. aerocolonigenes. StrainSCC 1886 was, therefore, compared directly with S. aerocolonigenes ATCC23870 and S. waywandensis NRRL B-161159.

Strain SCC 1886 can be differentiated from S. wayayandensis on the basisof morphology. S. Waywayandensis does not produce the characteristicclumps of interwoven aerial hyphae or "aerial colonies" found in SCC1886. S. waywayandensis also fails to reduce nitrate to nitrite and doesnot grow at 37° C. or 40° C.

Strain SCC 1886 shares the morphological and many of the physiologicalcharacteristics of S. aerocolonigenes ATCC 23870 (the type culture forthe species). The results of tests for acid production fromcarbohydrates, carbohydrate utilization and organic acid utilization aresimilar for the two cultures. Strain SCC 1886 differs from ATCC 23870 inthat strain SCC 1886 (1) fails to survive incubation at 50° C. for 8hours, (2) hydrolyzes arbutin, (3)inhibits the growth of Micrococcusluteus 9341 and (4) produces novel antibiotics with activity againstChlamydia.

Strain SCC 1886 differs from ATCC 53586 (SCC 1951) S. aerocolonigenessubsp. copiosa in that SCC 1886 (1) fails to produce acid fromerythritol or sorbitol (2) fails to destroy the chromophore of phenolred and (3) fails to survive incubation at 50° C. for 8 hours.

We, therefore, consider SCC 1886 to be a new subspecies of Saccharothrixaerocolonigenes for which we propose the name S. aerocolonigenes subsp.antibiotica in reference to the novel antibiotics which are produced bythe producing strain SCC 1886 of this invention.

                  TABLE 1                                                         ______________________________________                                        Physiological and Biochemical Characteristics of Saccharothrix                aerocolonigenes subsp. antibiotica SCC 1886, ATCC 55003                       Test                  Results                                                 ______________________________________                                        Hydrolysis or Decomposition of:                                               Adenine               -                                                       Allantoin             +                                                       Arbutin               +                                                       Casein                +                                                       Elastin               +                                                       Esculin               +                                                       Gelatin               +                                                       Hippurate             +                                                       Hypoxanthine          +                                                       L-Tyrosine            +                                                       Potato starch         +                                                       Urea                  +                                                       Xanthine              -                                                       Xylan                 +                                                       Resistance to Lysozyme                                                                              +                                                       Production of:                                                                Catalase              +                                                       Phosphatase           +                                                       Nitrate Reductase     +                                                       Formation of Melanin  -                                                       Growth at:                                                                    10° C.         +                                                       28° C.         +                                                       35° C.         +                                                       37° C.         +                                                       40° C.         +                                                       42° C.         wv                                                      45° C.         -                                                       Growth in the presence of:                                                    4% NaCl               +                                                       5% NaCl               +                                                       6% NaCl               v                                                       7% NaCl               -                                                       Utilization of:                                                               Acetate               +                                                       Benzoate              -                                                       Citrate               +                                                       Formate               +                                                       Lactate               +                                                       Malonate              +                                                       Oxalate               +                                                       Propionate            +                                                       Succinate             +                                                       Tartrate              -                                                       ______________________________________                                         + = positive; - = negative; v = variable; wv = weak and variable.        

                  TABLE 2                                                         ______________________________________                                        Carbohydrate Utilization and Acid Production for                              S. aerocolonigenes subsp. antibiotica SCC 1886, ATCC 55003                                                 Carbohydrate                                     Carbohydrate   Acid Production                                                                             Utilization.sup.1                                ______________________________________                                        Adonitol       +             wv                                               L-Arabinose    +             +                                                D-Cellobiose   +             +                                                Dextrin        +             +                                                Dulcitol       -             wv                                               i-Erythritol   -             -                                                D-Fructose     +             +                                                D-Galactose    +             +                                                Glucose        +             +                                                Glycerol       +             +                                                i-Inositol     +             +                                                Inulin         -             -                                                Lactose        +             +                                                Maltose        +             +                                                D-Mannitol     +             +                                                D-Mannose      +             +                                                D-Melezitose   -             -                                                D-Melibiose    +             +                                                α-Methyl-D-glucoside                                                                   -             -                                                D-Raffinose    +             wv                                               L-Rhamnose     +             +                                                D-Ribose       +             +                                                Salicin        wv            +                                                D-Sorbitol     -             wv                                               Sucrose        +             +                                                Trehalose      +             +                                                Xylose         +             +                                                ______________________________________                                         + = positive; - = negative; wv = weak and variable.                           .sup.1 Basal medium is ISP9                                              

                  TABLE 3                                                         ______________________________________                                        Description of S. aerolonigenes subsp. antibiotica ATCC                       55003 SCC 1886 on Various Description Media                                   Medium          Growth Characteristics                                        ______________________________________                                        Bennett Agar G:     Fair, translucent, off-white to                                               grayish yellow                                                         AM:    None                                                                   SP:    None                                                      Glycerol-Asparagine                                                                        G:     Poor, translucent, off-white                              Agar (ISP5)  AM:    None                                                                   SP:    None                                                      Glucose-Yeast                                                                              G:     Good to excellent, grayish yellow                         Extract Agar        (Methuen 4B4) to amber                                                        (methuen 4B6)                                                          AM:    None                                                                   SP:    Pale yellow-brown                                         Yeast Extract-Malt                                                                         G:     Good to excellent, grayish yellow                         Extract Agar (ISP2) (Methuen 4B4) to brownish orange                                              (Methuen 5C6)                                                          AM:    None                                                                   SP:    None                                                      Oatmeal Agar G:     Good, yellowish white (Methuen                            (ISP3)              3A2) to grayish yellow                                                        (Methuen 4B4)                                                          AM:    None                                                                   SP:    Pale yellow to yellow-brown                               Inorganic Salts-                                                                           G:     Good, yellowish white (Methuen                            Starch Agar (ISP4)  4A2) to grayish yellow                                                        (Methuen 4B4)                                                          AM:    None                                                                   SP:    Pale yellow-brown (variably                                                   present)                                                  Starch Agar  G:     Good, pale yellow (Methuen 4A3)                           (Waksman #21)       to grayish orange (Methuen 5B4)                                        AM:    None                                                                   SP:    Pinkish white (Methuen 7A2) to                                                grayish orange (Methuen 6B4)                              Water Agar   G:     Poor, translucent, off-white                                           AM:    None                                                                   SP:    None                                                      Peptone-Yeast                                                                              G:     Fair, grayish yellow                                      Extract Iron        (Methuen 4B4)                                             Agar (ISP6)  AM:    None                                                                   SP:    Pale yellow-brown                                         Czapek-Sucrose                                                                             G:     Good to excellent, yellow-brown                           Agar                turning light brown (Methuen 6D6)                                             to brownish orange (Methuen 5C5)                                       AM:    Sparse, white                                                          SP:    Brownish orange (Methuen 6C6                                                  to 6C8)                                                   ATCC Medium 172                                                                            G:     Excellent, brownish orange                                                    (Methuen 5C5 to 5C6)                                                   AM:    None                                                                   SP:    Yellow-brown to brownish orange                                               (Methuen 6C7)                                             ______________________________________                                         G = Vegative growth; AM = Aerial mycelium; SP = Soluble pigment          

The Fermentation

S. aerocolonigenes subsp. antibiotica SCC 1886 when fermented undercontrolled conditions in an aqueous medium containing assimilable sourceof carbon, nitrogen and inorganic substances produces recoverablequantities of the antibacterial compounds of formula I.

The fermentation which produces the antibacterials is initiated by theproduction of an inoculum which is usually produced in two or morestages. A suitable medium for preparing such inoculum is set forth belowas Medium A and the pH is maintained at about 6.4 to 8.2, preferablyabout 7.0. The proper pH ranges are usually maintained by incorporationof suitable buffers, such as calcium carbonate into the medium. Theinoculum is grown at a temperature of about 27° to 35°, preferably about30° C.

The media were sterilized and cooled prior to inoculation andfermentation stock cultures were stored as frozen whole broths atsub-zero temperatures prior to use.

Inoculation Preparation (First Stage)

Inoculum preparation was carried out in two stages for large scalefermentation (10 L). Suitable nutrients for preparing the inocula arelisted below:

    ______________________________________                                        Inoculum Medium A                                                             Ingredient            g/L                                                     ______________________________________                                        Glucose               10.0                                                    Trehalose             10.0                                                    Enzymatically hydrolyzed casein                                                                     5.0                                                     Soy flour             5.0                                                     Yeast extract         5.0                                                     Calcium carbonate     2.0                                                     Tap water             1 L                                                     ______________________________________                                    

Two and a half milliliters of freshly-thawed whole broth were used toinoculate 70 mL of the above-listed inoculum Medium A. The 250 mLErlenmeyer flasks were incubated at 30° C. for 48 hours on a shaker at300 rpm and having a 2 inch throw.

Second Inoculum Preparation

A 2 L Erlenmeyer flask containing 500 mL of sterile inoculum Medium Awas inoculated using 10% of the first stage inoculum. The procedure forthe first inoculum stage was followed.

Antibacterial Production (fermentation) Stage

The following fermentation Medium B has been found to produce thecompounds of this invention:

    ______________________________________                                        Fermentation Medium B                                                         Ingredient      g/L                                                           ______________________________________                                        PD 650 Dextrin  30.0                                                          Molasses        10.0                                                          Soluble starch  5.0                                                           Tap water       1 L                                                           Pre-sterilization                                                                             pH 6.5                                                        ______________________________________                                    

500 mL of the second stage inoculum were used to inoculate 10 L of thefermentation Medium B. The fermentation was carried out for 120 hours at30° C. in a 10L NBS Microgen fermenter with agitation and aeration at350 rpm and 3.5 Lpm, respectively.

No pH adjustment was made to the mixture, but monitoring shows a pHrange from about 6.4 to about 8.1 over the course of the 120 hours ofmixing.

Production of the antibacterial antibiotics was monitored over time byagar diffusion assay using Micrococcus luteus as the test organism.

Isolation and Purification

The six antibacterial antibiotics compounds of formula I were isolatedby extracting the whole fermentation broth with two volumes of animmiscible organic solvent, e.g. ethyl acetate. The extracts werecombined, dried and the solvent is evaporated to form a residue. Theresidue was dissolved in a minimum volume of acetone and a complex ofantibacterials was precipitated from hexane in the form of a solid.

The solid antibacterial complex so-formed was subjected to preparativeHigh Performance Liquid Chromatography (HPLC) on a silica gel cartridgeusing chloroform:methanol (95:5 v/v) as the eluting solvent to producean enriched antibacterial complex containing six components. Theantibacterial complex was further purified by preparative reverse-phraseHPLC on a YMC C-18 column (5×30 cm) using an elution solvent ofmethanol:0.01N NaH₂ PO₄ (7:3 v/v). The six antibacterial compoundsrepresented by formula I were isolated from the active fractions insubstantially chemically pure form (>99% pure) by removing the methanoland extracting the solids so-formed with ethyl acetate. The organiclayers were washed with brine, dried and the organic solvent wasevaporated to obtain the six individual antibacterials represented byformula I.

Structural Determination

The structure formulas of the six antibacterial compounds weredetermined by interpretation of the physiochemical data which aretabulated separately herein below. The UV spectra of each of the six aresimilar and indicative that the six antibacterials each possess asimilar chromophore and macrocyclic lactone aglycone structure. Themolecular formulas of each compound was determined by high resolutionmass spectrometric measurements. The ¹³ C NMR confirmed the number ofcarbons in each molecular formula which was determined by massspectrometric measurements. The structural formulas listed hereinbelowfor each of the six antibacterials were determined by analysis of theproton NMR, ¹³ C NMR, COSY spectral data and mass spectral fragments.##STR3##

UV(MeOH) λ max, nm: 205(13700), 240(13050), 267(12115)

+HCl: 207(38900), 262(10375)

+NaOH: 211(53030), 266(12800), 366(990)

IR (KBr) v max, cm⁻¹ : 3440, 2975, 2930, 1755, 1630, 1555, 1420, 1385,1060, 975

FAB MS: 1240(M+H)⁺, 1126, 978, 866, 736, 533.

High Res. MS: Found 1262. 6877(M+Na)⁺ Calcd. for C₆₇ H₁₀₁ NO₂₀ Na11262.6815

¹ H NMR(CDCl₃)δ: 5.92(dt, J=10,0.5 Hz, 1H), 5.83(d, J=10 Hz, 1H),5.74(d, J=1 Hz, 1H), 5.3(d, J=10 Hz, 1H), 5.27(m, 1H), 5.25(d, J=10 Hz,1H), 5.18(d, J=11 Hz, 1H), 5.15(d, J=5 Hz, 1H), 4.96(dd, J=10,2 Hz, 1H),4.94(s, 1H), 4.82(d, J=5 Hz, 1H), 4.57(dd, J=10,2 Hz, 1H), 4.26(m, 2H),4.12(q, J=7 Hz, 1H), 4.02(m,3H), 3.9(m, 2H), 3.74(d, J=10 Hz, 1 H)3.75-3.6(m,3H), 3.55(d, J=11 Hz, 1H), 3.47(dd, 11,5 Hz, 1H), 3.4(dd,J-10,3 Hz, 1H), 3.35(d, J=4 Hz, 1H), 3.32(dd, J=10,4 Hz,1H),3.2-3.4(d,2H), 2.45(t, J=8 Hz, 1H), 2.37(dd, J=16, 2 Hz, 1H),2.2-2.35(m, 4H), 2.16(dd, J=16, 2 Hz, 1H), 2.08(s, 3H), 2.05(m, 1H),1.7-2.0(several protons), 1.84(s, 3H), 1.64(s, 3H), 1,64-1.44(m, 5H),1.44(s, 3H), 1.36(s, 3H), 1.32(d, J=6 Hz, 3H), 1.28(d, J=6 Hz, 3H),1.26(d, J=6 Hz, 3H), 1.24(s, 3H), 1.20(d, J=6 Hz, 3H), 1.12(d, J=7 Hz,3H), 1.07(d, J=7 Hz, 3H), 1.0(d, J= 7 Hz, 3H), 0.96(t, J=7 Hz, 3H),0.64(d, J=5 Hz, 3H) ##STR4##

UV(MeOH) λ max, nm: 205, 240, 267

IR(KBr) v max, cm⁻¹ : 3430, 2975, 2925, 1765, 1730, 1555, 1455, 1385,1125, 1060, 990

FAB MS: 1254(M+H)⁺, 1140, 1011, 993, 880, 750, 547

High Res. MS: Found (M+H)⁺ : 1276.7004 calcd. for C₆₈ H₁₀₃ NO₂₀ Na:1276.6971

¹ H NMR(CDCl₃) δ: 5.78(d, J=11 Hz, 0.5 Hz, 1H), 5.66(d, J=10 Hz, 1H),5.62(d, J=11 Hz, 1H), 5.3(d, J=10 Hz, 1H), 5.3(m, 1H), 5.15(d, J=9 Hz,1H), 5.07(d, J=11 Hz, 1H), 5.03(d, J=4 Hz, 1H), 4.97(m, 1H), 4.8(m, 1H),4.7(d, J=5 Hz, 1H), 4.45(dd, J=10, 2 Hz, 1H), 4.15(b, 1H), 4.0(dq,J=7,0.5 Hz, 1H), 3.9(m, 4H), 3.8(s, 1H), 3.58(d,J=10 Hz, 1H),3.4(df,J=11,0.5 Hz, 1H), 3.37(m, 1H), 3.3(m, 1H), 3.15(m,. 4H), 2.4(dt,J=9,2 Hz, 1H), 2.3-2.05(several protons), 1.97(s, 3H), 1.7(d, J=14 Hz,2H), 2.05-1.4(several protons), 1.5(s, 3H), 1.3(s, 3H), 1.25(s, 3H),1.25(d, J=7 Hz, 3H), 1.2(s, 3H), 1.0(s, J=7 Hz, 3H), 1.0(m, 2H),0.9(d,J=7 Hz, 3H), 0.82(t, J=7 Hz, 3H), 1.04-1.08(several protons),0.65(d, J=5 Hz, 3H) ##STR5##

UV(MeOH) λ max, nm: 205, 240, 267

IR (KBr) v max, cm⁻¹ : 3435, 2980, 2930, 1765, 1665, 1635, 1455, 1385,1125, 1070, 985

FAB MS: 1110(M+H)⁺, 980, 850, 736, 533

High Res. MS: Found (M+H)⁺ 1110.6356 Calcd. for C₆₁ H₉₂ NO₁₇ 1110.6365

¹ H NMR(CDCl₃) δ: 5.9(dt, J=10,3 Hz, 1H), 5.86(d, J=11 Hz, 1H), 5.74(d,J=11 Hz, 1H), 5.37(m, 1H), 5.2(d, J=9 Hz, 1H), 5.14(dd, J=11,0.5 Hz,1H), 5.03(d, J=4 Hz, 1H), 4.92(dd, J=10,2 Hz, 1H), 4.99(s, 1H), 4.55(dd,J=8,2 Hz, 1H), 4.07(dd, J=6,4 Hz, 1H), 3.89(s, 1H), 3.83(dd, J=9, 10 Hz,1H), 3.74(dd, J=6, 1.5 Hz, 1H), 3.65(d, J=10 Hz, 1H), 3.25(dd, J=10,3Hz, 1H), 2.56(b, 1H), 2.46(dt, J=2,9 Hz, 1H), 2.34(b, 1H), 2.3(t, J= 7Hz, 1H), 2.22(b, 2H), 2.06-2.18(m, 2H), 2.2(s, 3H), 2.02-1.92(m, 4H),1.86-1.62(several protons), 1.6(s, 3H), 1.62-1.42(m, 2H), 1.4(s, 3H),1.34(s, 3H), 1.28(d, J=6 Hz, 3H), 1.26(d,J=6 Hz, 3H), 1.24(s, 3H), 1.23(d, J=6 Hz, 3H), 1.09(d, J=7.5 Hz, 3H), 1.06(d, J=7 Hz, 3H), 0.97(d, J=7Hz, 3H), 0.96(t, J=7 Hz, 3H), 0.64(d, J=5 Hz, 3H) ##STR6##

UV(MeOH) λ max, nm: 205, 240, 267

IR (KBr) v max, cm⁻¹ : 3440, 2975, 2930, 1755, 1665, 1630, 1455, 1375,1125, 1055, 975

FAB MS: 1224, 1111,959, 850, 736, 533

High Res. MS: Found (M+Na)⁺ 1246.6859 Calcd. for C₆₇ H₁₀₁ NO₁₉191246.6865

¹ H NMR(CDCl₃) δ: 5.9(dt, 10,2 Hz, 1H), 5.8(d, J=10 Hz, 1H), 5.75(d,J=10 Hz, 1H), 5.38(m, 2H), 5.22(d, J=9 Hz, 1H), 5.16(d, J=11 Hz, 1H),5.08(d, J=11 Hz, 1H), 5.03 (d, J=4 Hz, 1H), 4.95(dd, J=10,2 Hz, 1H),4.92(d, J=4 Hz, 1H), 4.8(d, J=1 Hz, 1H), 4.55(dd, J=10,2 Hz, 1H),4.27(dd, J=6,1 Hz, 1H), 4.1(m,2H), 3.89(s, 1H), 3.85(m, 2H), 3.67(d,J=10 Hz, 1H), 3.63(m, 2H), 3.53(dd, J=11,5 Hz, 2H), 3.45(dd, J=10, 3 Hz,1H),3.37(d, J=5 Hz, 2H) 3.31 (m, 1H), 3.23(dd, J=10,3 Hz, 2H), 2.47(dt,J=7,2 Hz, 1H), 2.34-2.1 (m, 6H), 2.05(s, 3H), 2.1-2.2(m, 2H), 2.0(m,3H), 1.93-1.64(several protons), 1.6(s, 3H), 1.64-1.4(m, 5H), 1.41(s,3H), 1.36(s, 3H), 1.31(d, J=6 Hz, 3H), 1.07(d, J=5 Hz, 3H), 0.99(d, J=6Hz, 3H), 0.97 (t, J=7 Hz, 3H), 0.65(d, J=4 Hz, 3H) ##STR7##

UV(MeOH) λ max, nm: 205, 240, 267

IR (KBr) v max, cm⁻¹ : 3430, 2965, 2930, 1750, 1630, 1455, 1440, 1385,1125, 1070, 985

FAB MS: 1124,(M+H)⁺, 995, 864, 750, 547

MOL FORMULA: C₆₂ H₉₃ NO₀₁₇

1H NMR (CDCl₃) δ: 5.87(dt, J=10 Hz, 1H), 5.77(d, J=10 Hz, 1H), 5.74(d,J=10 Hz, 1H), 5.37(m, 2H), 5.22(d, J=9 Hz, 1H), 5.16(d, J=11 Hz, 1H),5.03(d, J=4 Hz, 1H), 4.93(dd, J=10,2 Hz, 1H), 4.8(d, J=0.5 Hz, 1H),4.55(dd, J=10,2 Hz, 1H), 4.2(m, 1H), 4.1(m, 3H), 3.89(s, 1H), 3.84(dt,J=9,3 Hz, 1H), 3.75(dt, J=10,3 Hz, 1H), 3.65(m, 3H), 3.54(m, 2H),3.36(m, 3H), 3.26(s, 1H), 3.25(dd,J=7, 3 Hz, 1H), 2.47(dt,J=9,2 Hz, 1 H)2.4-2.25(m, 3H), 2.25-2.1 (m, 4H), 2.05(s, 3H), 2.1-1.75(m, severalprotons), 1.6(s, 3H), 1.75-1.46(several protons), 1.41 (s, 3H), 1.35(s,3H), 1.46-1.38(m, 2H), 1.38-1.33(m, 1H), 1.29(d, J=7 Hz, 3H), 1.27(d,J=7 Hz, 3H), 1.25(s, 3H), 1.24(d, J=7 Hz, 3H), 1.14(m, 2H), 1.1 (d, J=9Hz, 1H), 1.07(d, J=7 Hz, 3H), 0.98(d, J=7 Hz, 3H), 0.92(t, J=7 Hz, 3H),0.65(d, J=4 Hz, 3H) ##STR8##

UV(MeOH) λ max, nm: 205, 240, 267

IR(KBr) v max, cm⁻¹ : 3435, 2965, 2930, 1715, 1630, 1455, 1410, 1385,1125, 1055, 990 cm⁻¹

FAB MS: 1238(M+H)⁺, 1124, 864, 750, 679, 619, 547

MOL FORMULA: C₆₈ H₁₀₃ NO₁₉

¹ H NMR(CDCl₃) δ: 5.87(dt, J=11,2 Hz, 1H), 5.83(d, J=10 Hz, 1H), 5.75(d,J=10 Hz, 1H), 5.37(m, 2H), 5.22(d, J=9 Hz, 1H), 5.16(d, J=10.5 Hz, 1H),5.03(d, J=4 Hz, 1H), 4.95(dd, J=10,2 Hz, 1H), 4.92(s, 1H), 4.79(s, 1H),4.55(dd, J=10,2 Hz, 1H), 4.26(dd, J=10,2 Hz, 1H), 4.2(dt, J=3,3 Hz, 1H),4.08(dt, J=7,9 Hz, 1H), 3.9(s, 1H), 3.85(m, 2H), 3.65(m,5H), 3.54(dd,J=11,5 Hz, 1H), 3.45(dd, J=10, 3 Hz, 1H), 3.38(m, 1H), 3.26(dd, J= 7,3Hz, 1H), 3.24(s, 1H), 2.45(dt, J=10, 2 Hz, 1H), 2.4-2.25(m, 2H), 2.2(m,3H), 2.05(s, 3H), 1.95(m, 2H), 1.9-1.5 (several protons,), 1.5(s, 3H),1.41(s, 3H), 1.5-1.37(m, 2H), 1.35(s, 3H), 1.3(d, J=7 Hz, 3H), 1.27(d,J=7 Hz, 3H), 1,25(s, 3H), 1.23(d, J=5 Hz, 3H), 1.14(d, J=7 Hz, 3H), 1.1(d, J=7 Hz, 3H), 1.07(d, J=7 Hz, 3H), 0.98(d, J=7 Hz, 3H), 0.92(t, J=7Hz, 3H), 0.64(d, J=5 Hz, 3H) ##STR9##

UV(MeOH) λ max, nm: 215, 247, 263

IR(KBr) v max, cm⁻¹ : 3459, 2956, 2924, 1751, 1738, 1635, 1448, 1377,984

FAB MS: 551 (M+H)⁺

High Res MS: MW Found: 533.3267 calc for C₃₄ H₄₆ O₆ : 533.3285

¹ H NMR(CDCl₃) δ: 6.07(dt, J=10,1 Hz, 1H), 5.95(dt, J=10,2 Hz, 1H),5.46(m, 2H), 5.32(dt, J=10,0.5 Hz, 1H), 5.24(d, J=10 Hz, 1H), 3.9(s,1H), 3.68(dd, J=10, 5 Hz, 1H), 3.58(ddd, J=11,4,2 Hz, 1H), 3.47(d, J=5Hz, 1H), 2.55(m, 1H), 2.3(m, 3H), 2.05(m, 2H), 1.86(d, J=16 Hz, 1H),1.7(m, 1H), 1.6 (several protons),1.43(s, 3H), 1.04(d, J=7 Hz,3H).1.00(d, J=7 Hz, 3H), 0.98(t, J=7 Hz, 3H), 0.65(d, J=5 Hz, 3H)##STR10##

UV(MeOH) λ max, nm: 215, 242, 265

IR(KBr) v max, cm⁻¹ : 3433, 2962, 2930, 1764, 1673, 1628, 1454, 1370,1061

FAB MS: 736(M+H)⁺

High Res MS Found: (M+H)+736.4408 Calc for C₄₃ H₆₂ NO₉ : 736.4424

¹ H NMR(CDCl₃) δ: 6.02(d, J=10 Hz, 1H), 5.92(dt, J=10,1 Hz,1H), 5.8(d,J=10 Hz, 1H), 5.4(m, 2H), 5.23(d, J=9 Hz, 1H), 5.17(d, J=10.5 Hz, 1H),4.55(dd, J=10,2 Hz, 1H), 4.1 (dt, J=6, 1 Hz, 1H), 3.89(s, 1H), 3.68(d,J=10 Hz, 1H), 3.64(m, 2H), 3.54(dq, J=11,2 Hz, 1H), 3.39(d, J=5 Hz. 1H).2.48(m, 1H), 2.28(m, 3H), 2.06(s, 3H), 1.82(t, J=4 Hz, 2H), 1.72(dt,J=8,7 Hz, 1H), 1.63(s, 3H), 1.58-1.4(several protons), 1.44(m, 1H),1.4(s, 3 H), 1.37(s, 3H), 1.25(s, 3H), 1.06(d, J=6 Hz, 3H), 1.04(d, J=8Hz, 3H), 0.98(d, J=7 Hz, 3H), 0.96(t, J=7 Hz, 3H), 0.66(d, J=5 Hz, 3H)##STR11##

UV(MeOH) λ max, nm: 215, 249, 265

IR(KBr) v max, cm⁻¹ : 3459, 2962, 2937, 1764, 1750, 1622, 1583, 1454,1377, 984

FAB MS: 565(M+H)⁺, 547

MOL FORMULA: C₃₅ H₄₈ O₆

¹ H NMR(CDCl₃) δ: 6.03(d, J=10 Hz, 1H), 5.9(dt, J=10,1 Hz, 1H), 5.43(m,2H), 5.28(d, J=10.5 Hz, 1H), 5.22(d, J=10 Hz, 1H), 3.88(s, 1H), 3.66(dd,J=10, 5 Hz, 1H), 3.55(dq, J=10.5, 2 Hz, 1H), 3,45(d, J=5 Hz, 1H),2.53(dt, J-4, 1 Hz, 1H), 2.31 (m, 3H), 2.05(m, 2H), 1.82(d, J=15 Hz,1H), 1.8-1.46 (several protons), 1.61 (s, 3H), 1.42(s, 3H), 1.4(m, 1H),1.39(s, 3H), 1.26(m, 1H), 1.04(d, J=7 Hz, 3H), 1.01 (d, J=7H, 3H),0.92(t, J=7 Hz, 3H). 0.65(d, J=5 Hz, 3H) ##STR12##

UV(MeOH) λ max, nm: 215, 243, 264

IR(KBr) v max, cm⁻¹ : 3433, 2962, 2924, 1755, 1660, 1454, 1383, 1061,984

FAB MS: 750(M+H)⁺

MOL FORMULA: C₄₄ H₆₃ NO₉

¹ H NMR(CDCl₃) δ: 6.03(d, J=10 Hz, 1H), 5.89(dt, J=10,1 Hz, 1H), 5.82(d,J=10 Hz, 1H), 5.4(m, 2H), 5.23(d, J=10.5 Hz, 1H), 5.18(d, J=10.5 Hz,1H), 4.56(dd, J=10,2 Hz, 1H), 4.10(dt, J=6,1 Hz, 1H), 3.9(s, 1H),3.68(d, J=10 Hz, 1H), 3.65(m, 1H), 3.53(dq, 11, 2 Hz, 1H), 3.38(d, J=5Hz, 2.48(m, 1H), 2.3 (m, 3H), 2.06(s,3H),1.9-1.7(m,4H),1.62(s,3H) 1H),1.7-1.3(several protons), 1.42(s, 3H), 1.39(s, 3H), 1.25(s, 3H), 1.08(d,J=7 Hz, 3H), 1.03 (d, J=7 Hz, 3H), 1.00(d, J=7 Hz, 3H), 0.92(t, J=7 Hz,3H), 0.65(d, J=5 Hz, 3H)

                                      TABLE 4                                     __________________________________________________________________________    .sup.13 C NMR Chemical shifts of different components Ia-If from the          culture 85-05857                                                              Carbon No.                                                                           Kijanimycin                                                                           Ia    Ib    Ic    Id    Ie    If                               __________________________________________________________________________    C-1    167.1(s)                                                                              167.2(s)                                                                            167.2(s)                                                                            167.2(s)                                                                            167.1(s)                                                                            167.1(s)                                                                            167.1(s)                         C-2    109.9(s)                                                                              101.7(s)                                                                            101.7(s)                                                                            101.6(s)                                                                            101.6(s)                                                                            101.7(s)                                                                            101.6(s)                         C-3    206.2(s)                                                                              206.2(s)                                                                            206.2(s)                                                                            206.1(s)                                                                            206.1(s)                                                                            206.2(s)                                                                            206.2(s)                         C-4    51.0(s) 50.8(s)                                                                             50.8(s)                                                                             50.8(s)                                                                             50.8(s)                                                                             50.8(s)                                                                             50.8(s)                          C-5    31.3(d) 31.3(d)                                                                             31.3(d)                                                                             31.2(s)                                                                             31.2(s)                                                                             31.2(s)                                                                             31.2(s)                          C-6    27.9(d) 27.7(d)                                                                             27.7(d)                                                                             27.6(d)                                                                             27.6(d)                                                                             27.7(d)                                                                             27.7(d)                          C-7    41.6(t) 41.7(d)                                                                             41.8(t)                                                                             41.7(t)                                                                             41.7(t)                                                                             41.7(t)                                                                             41.7(t)                          C-8    38.5(d) 34.5(d)                                                                             34.5(d)                                                                             34.3(d)                                                                             34.3(d)                                                                             34.4(d)                                                                             34.3(d)                          C-9    84.5(d) 84.3(d)                                                                             84.3(d)                                                                             83.6(d)                                                                             83.6(d)                                                                             83.6(d)                                                                             83.6(d)                          C-10   34.8(d) 38.3(d)                                                                             38.5(d)                                                                             38.4(d)                                                                             38.4(d)                                                                             38.4(d)                                                                             38.4(d)                          C-11   125.8(d)                                                                              125.8(d)                                                                            125.8(d)                                                                            125.6(d)                                                                            125.6(d)                                                                            125.6(d)                                                                            125.6(d)                         C-12   126.7(d)                                                                              126.8(d)                                                                            126.8(d)                                                                            126.7(d)                                                                            126.7(d)                                                                            126.8(d)                                                                            126.7(d)                         C-13   53.2(d) 53.5(d)                                                                             53.5(d)                                                                             53.4(d)                                                                             53.4(d)                                                                             53.4(d)                                                                             53.4(d)                          C-14   135.7(s)                                                                              134.4(s)                                                                            134.4(s)                                                                            134.3(s)                                                                            134.3(s)                                                                            134.3(s)                                                                            134.4(s)                         C-15   123.6(d)                                                                              130.0(d)                                                                            130.1(d)                                                                            129.9(d)                                                                            129.9(d)                                                                            129.9(d)                                                                            129.9(d)                         C-16   31.1(t) 35.0(d)                                                                             32.9(d)                                                                             34.9(d)                                                                             34.9(d)                                                                             32.8(d)                                                                             32.8(d)                          C-17   78.4(d) 83.4(d)                                                                             83.4(d)                                                                             83.4(d)                                                                             83.4(d)                                                                             83.3(d)                                                                             83.4(d)                          C-18   137.1(s)                                                                              138.4(s)                                                                            138.4(s)                                                                            138.3(s)                                                                            138.3(s)                                                                            138.3(s)                                                                            138.3(s)                         C-19   121.5(d)                                                                              125.7(d)                                                                            125.7(d)                                                                            125.6(d)                                                                            125.6(d)                                                                            125.5(d)                                                                            125.5(d)                         C-20   43.1(d) 43.3(d)                                                                             43.3(d)                                                                             43.2(d)                                                                             43.2(d)                                                                             43.3(d)                                                                             43.2(d)                          C-21   119.3(d)                                                                              118.9(d)                                                                            118.9(d)                                                                            118.8(d)                                                                            118.8(d)                                                                            118.9(d)                                                                            118.8(d)                         C-22   141.5(s)                                                                              130.9(d)                                                                            131.1(d)                                                                            130.8(d)                                                                            130.8(d)                                                                            131.0(d)                                                                            131.0(d)                         C-23   40.2(d) 39.6(d)                                                                             39.6(d)                                                                             39.6(d)                                                                             39.6(d)                                                                             39.6(d)                                                                             39.5(d)                          C-24   35.5(t) 34.3(t)                                                                             34.3(t)                                                                             35.1(t)                                                                             35.1(t)                                                                             35.1(t)                                                                             35.1(t)                          C-25   83.3(s) 82.9(s)                                                                             82.9(s)                                                                             82.8(s)                                                                             82.8(s)                                                                             82.8(s)                                                                             82.8(s)                          C-26   201.5(s)                                                                              202.1(s)                                                                            202.2(s)                                                                            202.0(s)                                                                            202.0(s)                                                                            202.1(s)                                                                            202.0(s)                         C-27   20.2(q) 18.9(q)                                                                             19.0(q)                                                                             18.6(q)                                                                             18.6(q)                                                                             18.6(q)                                                                             18.6(q)                          C-28   22.2(q) 22.3(q)                                                                             22.3(q)                                                                             22.2(q)                                                                             22.2(q)                                                                             22.2(q)                                                                             22.3(q)                          C-29   14.0(q) 14.2(q)                                                                             14.3(q)                                                                             14.1(q)                                                                             14.1(q)                                                                             14.1(q)                                                                             14.1(q)                          C-30   15.1(q) 15.3(q)                                                                             17.1(q)                                                                             15.2(q)                                                                             15.2(q)                                                                             15.2(q)                                                                             15.2(q)                          C-31   13.7(q) 15.2(q)                                                                             15.3(q)                                                                             15.1(q)                                                                             15.1(q)                                                                             15.1(q)                                                                             15.1(q)                          C-32   64.4(t) 13.1(q)                                                                             13.1(q)                                                                             13.1(q)                                                                             13.1(q)                                                                             13.1(q)                                                                             13.1(q)                          C-33   15.1(q) 28.8(t)                                                                             38.1(t)                                                                             28.7(t)                                                                             28.7(t)                                                                             38.0(t)                                                                             38.0(t)                          C-34   --      12.7(q)                                                                             21.1(t)                                                                             12.6(q)                                                                             12.6(q)                                                                             21.1(t)                                                                             21.1(t)                          C-35   --      --    14.1(q)                                                                             --    --    14.0(q)                                                                             14.0(q)                          C-1A   98.2(d) 98.1(d)                                                                             98.1(d)                                                                             98.5(d)                                                                             98.5(d)                                                                             98.5(d)                                                                             98.5(d)                          C-2A   29.9(t) 29.8(t)                                                                             29.8(t)                                                                             22.8(t)                                                                             22.8(t)                                                                             22.8(t)                                                                             22.8(t)                          C-3A   66.8(d) 66.5(d)                                                                             66.5(d)                                                                             29.1(t)                                                                             29.1(t)                                                                             29.1(t)                                                                             29.1(d)                          C-4A   71.8(d) 71.7(d)                                                                             71.7(d)                                                                             82.4(d)                                                                             82.5(d)                                                                             82.5(d)                                                                             82.5(d)                          C-5A   65.1(d) 65.1(d)                                                                             65.1(d)                                                                             68.3(d)                                                                             68.3(d)                                                                             68.4(d)                                                                             68.3(d)                          C-6A   17.9(q) 17.8(q)                                                                             18.5(q)                                                                             18.1(q)                                                                             18.4(q)                                                                             18.1(q)                                                                             18.4(q)                          C-1B   90.8(d) 91.0(d)                                                                             91.0(d)                                                                             91.9(d)                                                                             91.9(d)                                                                             91.9(d)                                                                             91.9(d)                          C-2B   29.7(t) 36.9(t)                                                                             36.9(t)                                                                             37.8(t)                                                                             36.7(t)                                                                             37.8(d)                                                                             36.7(d)                          C-3B   62.6(d) 70.4(d)                                                                             70.4(d)                                                                             68.2(d)                                                                             68.0(d)                                                                             68.3(d)                                                                             68.0(d)                          C-4B   79.6(d) 75.2(d)                                                                             75.2(d)                                                                             74.5(d)                                                                             75.1(d)                                                                             74.5(d)                                                                             75.1(d)                          C-5B   67.1(d) 68.1(d)                                                                             68.1(d)                                                                             69.4(d)                                                                             70.3(d)                                                                             69.3(d)                                                                             70.3(d)                          C-6B   17.9(q) 18.1(q)                                                                             18.1(q)                                                                             17.7(q)                                                                             17.7(q)                                                                             17.7(q)                                                                             17.7(q)                          C-1C   92.2(d) 92.0(d)                                                                             92.0(d)                                                                             --    91.9(d)                                                                             --    91.9(d)                          C-2C   34.4(t) 27.4(t)                                                                             27.4(t)                                                                             --    27.4(t)                                                                             --    27.4(t)                          C-3C   67.5(d) 30.0(t)                                                                             30.1(t)                                                                             --    29.7(t)                                                                             --    29.7(t)                          C-4C   72.4(d) 71.9(d)                                                                             72.0(d)                                                                             --    71.7(d)                                                                             --    71.7(d)                          C-5C   64.9(d) 63.9(d)                                                                             63.9(d)                                                                             --    63.9(d)                                                                             --    63.9(d)                          C-6C   17.9(q) 17.8(q)                                                                             18.3(q)                                                                             --    17.7(q)                                                                             --    17.7(q)                          C-1D   99.8(d) 98.4(d)                                                                             98.4(d)                                                                             98.9(d)                                                                             98.9(d)                                                                             98.8(d)                                                                             99.0(d)                          C-2D   36.8(t) 40.3(t)                                                                             40.3(t)                                                                             40.2(t)                                                                             40.2(t)                                                                             40.3(t)                                                                             40.2(t)                          C-3D   63.8(d) 65.5(d)                                                                             65.5(d)                                                                             66.2(d)                                                                             66.2(d)                                                                             66.3(d)                                                                             66.2(d)                          C-4D   82.6(d) 82.3(d)                                                                             82.3(d)                                                                             72.7(d)                                                                             74.5(d)                                                                             72.8(d)                                                                             74.5(d)                          C-5D   68.1(d) 62.1(d)                                                                             62.1(d)                                                                             62.4(d)                                                                             62.3(d)                                                                             62.4(d)                                                                             62.4(d)                          C-6D   18.4(q) 18.5(q)                                                                             19.0(q)                                                                             18.4(q)                                                                             18.8(q)                                                                             18.4(q)                                                                             19.8(q)                          C-1E   97.1(d) 97.9(d)                                                                             97.9(d)                                                                             97.9(d)                                                                             97.8(d)                                                                             97.8(d)                                                                             97.8(d)                          C-2E   35.7(t) 32.3(t)                                                                             32.7(t)                                                                             32.3(t)                                                                             32.3(t)                                                                             32.7(t)                                                                             32.6(t)                          C-3E   91.0(s) 72.7(s)                                                                             72.7(s)                                                                             72.7(s)                                                                             72.7(s)                                                                             72.8(s)                                                                             72.7(s)                          C-4E   53.8(d) 55.5(d)                                                                             55.5(d)                                                                             55.4(d)                                                                             55.4(d)                                                                             55.4(d)                                                                             55.4(d)                          C-5E   69.1(d) 67.7(d)                                                                             67.7(d)                                                                             67.7(d)                                                                             67.7(d)                                                                             67.7(d)                                                                             67.7(d)                          C-6E   17.0(q) 17.1(q)                                                                             17.9(q)                                                                             17.0(q)                                                                             17.0(q)                                                                             17.0(q)                                                                             17.0(q)                          3E-CH.sub.3                                                                          25.3(q) 34.1(q)                                                                             34.1(q)                                                                             34.0(q)                                                                             34.0(q)                                                                             34.1(q)                                                                             34.0(q)                          4E- .sub.-- COCH.sub.3                                                               157.4(s)                                                                              170.4(s)                                                                            170.4(s)                                                                            170.5(s)                                                                            170.4(s)                                                                            170.4(s)                                                                            170.4(s)                         4E-CO .sub.-- CH.sub.3                                                               52.7(q) 23.4(s)                                                                             23.5(q)                                                                             23.4(q)                                                                             23.4(q)                                                                             23.4(q)                                                                             23.4(q)                          __________________________________________________________________________

Biological Activity

The six antibacterials represented by formula I exhibited in vitroantibacterial activity in a Sabourand dextrose broth medium against 14Gram positive microorganism. (geometric mean have MICs ≈>4 mcg/mL,MHB<pH 7.4 after 24 hrs). The preferred compounds of formula Ia whereinR₁ =CH₃, R₂ =OH and R₃ = ##STR13## and Ib wherein R₁ =CH₂ CH₃, R₂ =OHand R₃ = ##STR14## exhibited (a) geometric mean MICs of >2 against theGram positive organism Sarcina lutea 9341 and (b) in an in vitroanti-chlamydial assay (using McCoy cell cultures infected with Chlamydiatrachomatis, Serotype H (VR-879) obtained from the ATCC) showedsignificant (i.e., >85 and even 100% inhibition of Chlamydia trachomatisserotype H at concentrations 1.0 and 0.5 μg/mL. Neither of these twocompounds (Ia, or Ib) showed any cytotoxicity at the concentrationstested. The other four antibacterials (Ic-If) did not demonstratenotable inhibition of Chlamydia or cytotoxicity at the concentrationstested.

Anti-Chlamydia Test Protocol

Chlamydia trachomatis, serotype H, (VR-879) obtained from the ATCC waspropagated in McCoy cells in disposable tissue culture labware at 37° C.in a humidified atmosphere of 5% CO₂. Inclusions were visuallizedfollowing staining using a fluorescein conjugated monoclonal antibodydirected against Chlamydia trachomatis specific antigens.

McCoy cell cultures were processed and grown as monolayers on coverslipsin 1 dram shell vials.

Eagles Minimal Essential Media (E-MEM) supplemented with 10% (v/v) heatinactivated fetal bovine serum (FBS), 5.4 g/L glucose, 2 μg/mlcycloheximide, 2.5 μg/ml fungizone, 2 mM L-glutamine, 10 μgmlgentamicin, and 10 mM Hepes was used to maintain test cultures.

Experimental Design Preparation of Compound for AntiChlamydia Test

Each compound of formula I was diluted iln 100% DMSO. Final dilutions of1.0, 0.5, 0.1, 0.05, 0.01, and 0.005 μg/ml were prepared in maintenancemedia. The final concentration of DMSO in each dilution was 1%. Thediluted compounds were soluble and prepared on the day of use.

Chlamydia Preparation

Dilutions of C. trachomatis were cultured on McCoy cells, stained usinga specific fluorescent antibody, and inclusions quantitated to determinethat dilution of organism to be used in the assay.

Test Method

C. trachomatis stock was diluted 1:30 in maintenance media. Media wasgently aspirated from each McCoyt culture shell vial and replaced with100 μl of either Chlamydia (test and Chlamydia control wells) or media(cytotoxicity and cell control wells). The cultures were centrifuged at4300 RPM for 60 minutes and then incubated at 37° C. for 30 minutes. Thecells were gently washed 3 times with media to remove any unadsorbedinoculum. Following the washing, 1 ml of either compound dilution(cytotoxicity and test wells) or media (cell control and Chlamydiacontrol wells) was added to the cell monolayer.

Incubation

The cultures were incubated at 37° C. in humidified air supplementedwith 5% CO₂ for 48 hours. The cells were monitored by microscopicobservations for cytotoxicity.

Assay for Chlamydia Recovery

Following the 48 hours incubation period, final microscopic observationsfor cytotoxicity were recorded. A fluorescent antibody assay wasperformed using Syva's fluorescein conjugated monoclonal antibodydirected at the Chlamydia trachometis antigen.

Calculation

% of Chlamydia Control: Test/Chlamydial control X 100 Test =Mean numberof inclusions in the test cultures Chlamydia control=Mean number ofinclusions in the Chlamydia control compounds Ia and Ib exhibited 100%inhibition of Chlamydia infections at 1.0 μg/mL.

Pharmaceutical Compositions

This invention contemplates antibacterially effective pharmaceuticalcompositions comprising an antimicrobially effective amount of acompound of formula I in admixture with a pharmaceutically acceptable,non-toxic carder adapted for topical, oral or parenteral use.

The topical, oral and parenteral dosage forms may be prepared accordingto procedures well known in the art, and may contain a variety ofingredients.

In the case of topical formulations, e.g., ointments, creams, lotions,powders, tablets, pessaries or sprays, the formulation will containabout 10 mg to 10 grams of a compound of formula I per 100 grams ofcarder and preferably about 100 mg to about 1 gram of a compound offormula I per 100 grams of carrier.

Oral dosage forms include tablets, capsules, elixirs, suspensions, andthe like. Tablets contain such excipients as starch or lactose;liquidforms may contain coloring or flavoring agents.

Parenteral forms to be injected intravenously, intramuscularly, orsubcutaneously are usually in the form of a sterile solution, and masycontain salts or glucose to make the solution isotonic.

In general, the topical dosage range of the compound of formula I isfrom about 0.1% to about 10% by weight of a particular pharmaceuticalcomposition formulated in single or divided doses, with the preferredrange being about 0.5% to about 4% and with the most preferred rangebeing about 1% to about 2%.

In general, the oral dosage for humans of the compound of formula Iadministered to combat a given bacterial infection ranges from about 1mg per kilogram of body weight to about 50 mg per kilogram of bodyweight per day, in single or divided doses, with about 2 mg per kilogramof body weight to about 20 mg per kilogram of body weight per day beingpreferred.

In general, the parenteral dosage for humans of the compound of formulaI administered to combat a given bacterial infection ranges for about0.1 mg per kilogram of body weight per day, to about 20 mg per kilogramof body weight per day, in single or divided doses, with about 1 mg perkilogram of body weight per day being preferred.

It will be appreciated that the actual preferred dosages of a compoundof this invention will vary according to the particular compositionformulated, the mode of application and the particular situs, as well asthe health of the host being treated. Many factors that modify theaction of the drug will be taken into account by the attendingclinician, e.g., age, body weight, sex, diet, time of administration,rate of excretion, condition of the host, drug combinations, reactionsensitivities and severity of the disease. Administration can be carriedout continuously or periodically within the maximum tolerated dose.Optimal application rates for a given set of conditions can be readilyascertained by the attending clinician using conventional dosagedetermination tests.

This invention also contemplates anti-chlamydia effective pharmaceuticalcompositions comprising an anti-chlamydia effective amount of a compoundof formula I, e.g., at least one compound of formula 1 a wherein R₁=CH₃, R₂ =OH, and R₃ = ##STR15## or of formula Ib wherein R₁ =CH₂ CH₃,R₂ =OH and R₃ = ##STR16## in admixture with a pharmaceuticallyacceptable, non-toxic carrier adapted for topical, oral or parenteraluse. The pharmaceutical composition may also contain a compound offormula Ia or Ib in admixture with one or more of compounds of formulaIc-If.

The topical, oral and parenteral dosage forms may be prepared accordingto procedures well known in the art, and may contain a variety ofingredients so long as antichlamydia effective amount of a compound offormula Ia or IIa is present; mixtures of Ia or Ib in admixture with oneor more of Ic-If may also be used.

In the case of topical formulations for treating and/or preventingChlamydia infections, e.g., ointments, creams, lotions, powders,tablets, pessaries or sprays, the formulation will contain about 1 mg to1 gram of an anti-chlamydia compound of formula I per 1 00 grams ofcarrier and preferably about 10 mg to about 1 00 mg of a compound offormula I per 100 grams of carrier.

Oral dosage forms for treating and/or preventing Chlamydia, infectionsinclude tablets, capsules, elixirs, suspensions, and the like. Tabletscontain such excipients as starch or lactose; liquid forms may containcoloring or flavoring agents.

Parenteral forms for treating and/or preventing Chlamydia infections tobe injected intravenously, intramuscularly, or subcutaneously areusually in the form of a sterile solution, and may contain salts orglucose to make the solution isotonic.

In general, the topical dosage range for treating and/or preventingChlamydia infections in humans of an anti-chlamydia compound of formulaI is from about 0.01% to about 1% by weight of a particularpharmaceutical composition formulated in single or divided doses, withthe preferred range being about 0.05% to about 0.5% and with the mostpreferred range being about 0.01% to about 0.5%.

In general, the oral dosage for humans of an anti-chlamydia compound offormula I administered to combat a given Chlamydia infection ranges fromabout 0. 1 mg per kilogram of body weight to about 50 mg per kilogram ofbody weight per day, in single or divided doses, with about 0.2 mg perkilogram of body weight to about 20 mg per kilogram of body weight perday being preferred.

In general, the parenteral dosage for humans of an antichlamydiacompound of formula i administered to combat a given Chlamydia infectionranges for about 0.01 mg per kilogram of body weight per day, to about 2mg per kilogram of body weight per day, in single or divided doses, withabout 0.5 mg per kilogram of body weight per day being preferred.

It will be appreciated that the actual preferred dosages of anantichlamydia compound of this invention will vary according to theparticular composition formulated, the mode of application and theparticular situs, as well as the host being treated. Many factors thatmodify the action of the drug will be taken into account by theattending clinician, e.g., age, body weight, sex, diet, time ofadministration, rate of excretion, condition of the host, drugcombinations, reaction sensitivities and severity of the disease.Administration can be carried out continuously or periodically withinthe maximum tolerated dose. Optimal application rates for a given set ofconditions can be readily ascertained by the attending clinician usingconventional dosage determination tests.

What is claimed is:
 1. A biologically pure culture containing themicroorganism Saccharothrix Aerocolongenis sub sp antibiotica SCCC 1886,ATCC 55003 said culture being capable of producing the compounds offormula I of claim 1 in recoverable quantity upon fermentation in anaqueous nutrient medium containing assimilable sources of carbon,nitrogen and inorganic substances.